XFX GeForce 6600GT, (128 MB) Graphic Card "farming" Questions

...GeForce 6800 graphics card I've just installed a XFX GeForce 6800 256MB graphics card to run the Farming Simulator programme, which works. But now World of Warcraft doesn't!! It blue screens every ...

i have sis672 mirage +3 256mb graphics ram 512 when playing games it get stuck like gta vice city,liberty city. os-windows xp service pack 2. but my old computer also have sis old version graphics ...